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Conrad launched the 3.6 series of Armadillo earlier today with a first 3.6.0 release. So RcppArmadillo, our wrapper for R and Armadillo, is now on CRAN with its corresponding version 0.3.6.0. No R level or interface changes were needed, and the upstream changes are summarized below.

#### Changes in RcppArmadillo version 0.3.6.0 (2012-12-07)

• faster handling of compound expressions with submatrices and subcubes

• added support for loading matrices as text files with NaN and Inf elements

• added stable_sort_index(), which preserves the relative order of elements with equivalent values

• added handling of sparse matrices by mean(), var(), norm(), abs(), square(), sqrt()